UNT Libraries Government Documents Department - 3 Matching Results

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Cultivator-Plow.

Description: Patent for improvements in cultivator-plow through the positioning and connection of parts. Adjustable plow for different cultivating functions and different crops, especially for cotton. Illustration and materials recommendations included.
Date: March 18, 1902
Creator: Sheffield, James A. D. & Sheffield, John C.
Item Type: Refine your search to only Patent

Improvement in Ditching and Excavating Machines.

Description: Patent for "an improved machine for making ditches and other excavations, which shall be so constructed as to separate the slice from the soil, raise it, and deposit it at the side of the cut, which will feed itself forward automatically." (Lines 14-19) Includes instructions and illustrations.
Date: September 18, 1877
Creator: De Force, Samuel A.
Item Type: Refine your search to only Patent

Spring Bed Bottom.

Description: Patent for a new and improved spring bed-bottom. This design utilizes a new method of coiling the wire so that only one wire may be used to make up all of the springs. By moving diagonally from one end of one spring to the end of another, this design eliminates the possibility of losing any individual spring.
Date: October 18, 1881
Creator: Eichelberger, Henry. H. C. & Bruner, Hilary Wentz
Item Type: Refine your search to only Patent
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